FACTBOX: Security developments in Afghanistan

(Reuters) - Following are security developments in Afghanistan reported as of 4 a.m. EDT on Wednesday:

LOGAR - A U.S.-led coalition UH-60 Blackhawk helicopter was shot down by small-arms fire on Wednesday in Logar province, to the south of Kabul, but there were no serious injuries, the U.S. military said.

SPIN BOLDAK - A suicide car bomber targeted a NATO convoy on a road near the southern town of Spin Boldak on the border with Pakistan on Wednesday, wounding two Canadian soldiers, three Afghan police and two civilians, police said.

GHAZNI - Four Taliban insurgents were killed while planting a roadside bomb late on Tuesday in Ghazni province to the southwest of Kabul, an official said.

WARDAK - Afghan forces were searching on Wednesday for a Chinese road construction worker who was seized along with his driver in Wardak province a day earlier, an official said.

KANDAHAR - Eight Taliban fighters were killed in a clash with Afghan army after the militants ambushed an army convoy on Tuesday in Kandahar province, the Defence Ministry said.

Reuters could not establish contact with the Taliban to get their comment for any of the reported incidents.

(Compiled by Sayed Salahuddin; Editing by Robert Birsel and Jerry Norton)